Hi Bill. try setting ASTLabelType in tree grammar.
T
On Jul 22, 2010, at 12:26 PM, Bill Andersen wrote:
> Hi Folks,
>
> This is my second attempt at asking this question. Hopefully it is clear.
> If not, please let me know.
>
> I'm interested in using a custom AST node class to carry type information.
>
> I do not want to build a custom TreeAdaptor to determine node type based on
> token id because only a few AST nodes will have to be of the custom class.
>
> Here's a sample production from the tree generating grammar.
>
> rule
> : ... match something ...
> -> ^(NODE<CustomType>[param] ...)
> ;
>
> So far so good. I know how to do this.
>
> Let's say CustomType looks like this
>
> class CustomType extends CommonTree {
> public T param;
> public CustomType(int ttype, T param) { ... }
> public T getParam() { ... }
> ...
> }
>
> Now I have another grammar that consumes ASTs from the first grammar. I want
> to do this:
>
> rule
> : ^(NODE ...)
> { ... do something with this information ... }
> ;
>
> So, what syntax do I need in the action to get a T-typed param value from
> this node?
>
> Any help appreciated
>
> List: http://www.antlr.org/mailman/listinfo/antlr-interest
> Unsubscribe:
> http://www.antlr.org/mailman/options/antlr-interest/your-email-address
List: http://www.antlr.org/mailman/listinfo/antlr-interest
Unsubscribe:
http://www.antlr.org/mailman/options/antlr-interest/your-email-address
--
You received this message because you are subscribed to the Google Groups
"il-antlr-interest" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/il-antlr-interest?hl=en.
